Car-door-operating mechanism.



0. A. LINDSTRM. GAR DOOR OPERATNG MEGHANISM.

APPLICATION FILED APRB, 1909.

Patented Nov. 9, 1909.

4 SHEETS- SHEBT 1.

C. A. LINDSTRM. GAR DOOB. OPERATING MEGHANISM.

APPLICATION FILED yAPB.. 8, 1909.

Patented Nov.4 9. 1909* 4 SHEETS-SHEET 2.'

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C. A. LINDSTRIVL OAR DOOR OPERATING MECHANISM.

APPLICATION FILED A-Pm, 19091. I 939,426.. 4 Patented Nov.9,1909.

wi h1 mozo MW @WV A LINDSTROM n GAR DOOR OPERATINGl MEGHANISM. YAPPLIUATION. FILED APR. s, 1909.

Patented Nov.' 9, 1909.

4 SHEETS-SHEET 4.

- UNITED srATus 'rgrnnr oFFieE.

CHARLES- A. LINDSTRM, OF PITTSBURG, PENNSYLVANIA; ,fASSiIGrNOR T PRESSEID STEEL GAR COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION 0F NEW JERSEY.

Specification of Letters Patent.

CAR-DOOR-OPERATING MECHANISM.

Patented Nov. 9,1909.

To all whom 'it mcy'concern:

Be it known that I, CHARLES A. LIND- sTRM, a citizen of the United States, residing at Pittsburg, northside, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Car-Door-Operating Mechan1s1n,of which the following is a specication.

An object of the present inventionfis to provide a door operatinginechanism especially adapted for thattype of freight cars l known as general service cars in which the car bottom is fiat, or nearly flat, and composed Wholly, or almost wholly, of drop doors. Of course, the invention may be applied on one or any number vof drop doors m any dump car. A*

A more specific object of the present invention is to provide' a door mechanism and its details in whichmeans is employed for raising" the doors to closed ositions, which does not exten-d across the free edge` of the door at any7 time to interfere with the free dischargeA of the lading from the car, and, furthermore, to provide means lforrelieving the door-raising part of said mechanism from strain when the doors are in closed positio'ns. A l

I will describe my invention as applied to a general service car inv which the bottom of the car is flat, or nearly fiat, and Wholly composed of drop doors.'

The invention is clearly, accurately and` fully hereinafter described and shown in the accompanying drawings, in which like reference characters refer to like parts, and in which;

Figure 1 is a plan View of a part of a car of the type referred to embodying my invention. Fig. 2 is a transverse section through one-half of said car on the line 2 2, Fig. 1. Fig. 3 is a like view on the line 3 3, Fig. 1. Fig. 4 is a like View on the line 4 4, Fig. 1. Fig. 5 is a vertical section onthe line 5 5, Fig. 4. Fig. Gis a verticalsection on the line 6 6, Fig. 1. Fig. 7 is a detail view of one of the shaft bearings, a section through the shaft and one of the shaft lifting ulleys,`

one of the toothed slotted shaft bearings. Figs-10, 1l and 12 show detail views of one of the shaft lifting pulleys. Fi s. 13, 14 and 15 are detail views of the door ifting quadrants forming a part of the mechanism. Fig. 16 is a vertical section through a cross-bearer showing modified construction.

Referring now in detail to the drawings 1 represents the center sill construction of suitable formation, 2 the car side construction, 3 the car end sill, 4 the central crossbearer of the car and 5 the cross-bearers intermediate the center cross-bearer' andthe end sill. These cross-bearers and the end sill are of suitable formation. The former extends preferably, though not necessarily, only from the center construction 1 to the side construction 2. The end sill 3, of course, preferably extends entirely across the car.y 4

6 are the car doors preferably hinged at the center construction 1 and discharging outwardly toward the side construction 2.

7 is a door raising shaft, there being preferf'ably four to each car of the type referred te stationarily journaled beneath the' doors yeu rer the hinged edges of the door than their Ifree edges. Shafts 7 are suitablyjournaled /in the cross-bearer of the car and extend /from one end sill to the longitudinal center of the c ar. Each of the shafts 7 is provided with one or more door ,raising arms 8 extending upwardly, when lthe doors are in closed posltions, in a curved line and engaging Wearing plates or shoes 9 on the under side of the doors. The wearing shoes 9 engage lthe door raising arms 8 lsubstantially at a tano'ent to said arms to provide, as farl as possibile, during operation a rolling action between the doors and arms, thus greatly reducing the friction. The means for operating shaft 7 is hereinafter described..

10 are door supporting shafts, preferably four to a car, each extending from end sill to longitudinal lcenter of the car and operatinv a plurality of doors and located in elongated slotted bearings 11 preferably at tl outer parts being broken away for sake o cleara ends of the cross-bearers, in the type of car Clt cated aty the end of shafty it),

referred to, that is, relatively nearer th edges of the doors than the hinge t. Shafts l0 are connecten ret .ably a. end, through means of pn rays 13 Winding thereon, with t mounted on shaft 7, so th at wh rotating a pull is exerted quadrants iftturning' shaft 7 and raising arms S and through arms 8 raising the doors to elosed positions. Bearings il are provided with notches or recesses 1la at their outer endin which shaft 10 rests when in poi-ition tor operating shafts 7, out not in door support` ing position, .these notches or recesses heiner designed to prevent an ii'iward translaiiini of sha'tt 10 before the doors are elizs l. l/Vhilc in these notches or reces lin. sliatt l0 merely rotates and exerizeises a door raising,` function tl'ironlsgh the medium oil chains 13 and shafts lllaeh ot the pulleys l ioprovided with a tooth or cani device t2 adapted io engage a tooth or cam device it on the hear ing 1l to litt; shaft 10 out ot' the notch or recess il, after a limited preliminary rotaY p ll tion of the pulleyY l2, suttieient in extent toy turn shaft 7 -sullicientlv to raise doors 43 to closed positions. t'ter the shaft, l() has` been raised in this manner. itin-thor windiiirer of the chain 13 on the putte;v t9, e: usc-s hi' drawing', a tanslation of shattl() hodily across the free edges of doors tf to a position beneath the outer or free edges ot the doorl G in which position the shaft 'ttt relieresl thiA arras 8 of tho load-weight or strain on thtx doors when the ear is loaded or the weight oi' the doors whenthc ear is empty.

'The shaft 10 engages doorsti through the niediiiin ot serrated tapered shoes 1.3 and collars lh, the former heine; secured to the i under side of the forward edges ol the doorsI tl, the latter being` rigidlyY mounted on the shaft 10.

hhn'ifingA the siait ttt inwardly. ,i

i l l i througjh the siots ot the hearing il, torres l the collars tti a ainst the tapered outer enitof the shoes l5. which has tlic ett'eet olt wedg- .ingr the doors G home or finallyv adjustiiur t'lieiii in their closed po. 'tions addition to relieving the door raising' means troni si' rain. rEllie ainountof chain wound upon they pulleys' l2 previous to the engagement olf the teeth lll) and 1Q is equal suhstantialli' iii length to the amount ot eliain hearing against the quadrants tt. in the position oecupied hy the quadrants and shown iu dotted lines in Fig. ft when the doorl are in lowered positions. -When the .shalt leaves the notches or recesses tt'YI owingA to tlie tart that f rihcth of course, may he long;` thei7 perform the functions which theyY are intended. in tl iY hare shown the quadrants, at: the renter of the rar, :is inter-engaging so that one ipiailrant 'terms a hearing tor the other. since there is no relat ire lateral inovcnient: or translation ot these quadrants in the operation ot' a ear einliiodying this nieohanifan and of the type referred to. .tiny suit,- ahle means ma f he employed for rotating i0.- ln, the drawings no ifa d ie end sill tot lowing` desire to sei'ure ln: Letters .tfatei'itz t, lii :i dump car. a itiseharoc door.` a liodillv iiioiahle aud rotatahle shaft ltor tirst; elosiiipj `said door and then niorino` into position to hold .said door in closed position, a recess in the ear tindex-.traine l'or holding' said shoti, in door elosing poi-ation and cani means operahle upon rotation ot said shattio toreo the latter it ol` Said reve in a dunip ear, the eonihiuation willi a drop door in ilierar undertraineandahodily uiorahle shalt`ifonnected to :i device in eii- Auoeuieiit with said door to operate the latter. ot' a shalt retaininpi` recess ,toriiied in aid i'indei'l'ranie, ram means independent (it the renner-tion lietween said shaft and. door, operahle upon rotation oi .id shiil't to torre the latter trom Isaid recess to permit hodily tr: natation ol.' .said shalt; and 'means for rolatiner .said shalt.

il. ln :i dunip ear. the combination drop door in the ear undt traine hodiljiiiiorahle halt connected to a 5 the. latter l'rom said rei-ess to permit hodily the armsI S are iii their uppermost positions. i

the doorsl haviiie heen elosed. tui'tlier wind- I int;` of the chain lil upon the, pulleys l2. olI

coursey draws the .shai't toward the traiisi verse center of the ear. 'llie consi' ruet ion ot iranslation ot' said shat't and means for rotatint,r .said shaft'.

l. ln a dump ear.l the eoinhination with a drop door in the car undertranie and a liodiliv morahley sliat'tz eoniieeted to a device in engagement with said door to operate tho latter. ot a shaltV retainingv reeess l'orniei't in said iuiderl'rauie. a projection mounted on .said stia l'ty independent ol the connection he tweensaid shaft and door `and arranged to engage the underframe'after limited preliminary rotation f said shaft to remove the latter from saidrecess to permit bodily translation ofl saidshaftand means for rotating said shaft, A j

5.` In a, dump car, having a suitable underfraine'and a drop door mounted on said nnderframe, a slotted bearing formed with a shaft retaining recess and a projection adjacent said recess, a bodily movable shaft adapted to rest in said recess and connected to a device in en agement with said door and a projection ad of said shaft to engage the projection on said bearing to force said shaft from said recess to permit bodily translation of said shaft and means for rotating said shaft.

6. In a dump car, the combination with a drop door and a shaft suitably connected with said door to raise the latter, of a quadrant mounted on'said shaft and a chain connected to said uadrant and a second shaft adapted to win said chain to operate rst.

mentioned shaft and raise the door.

l7. In a dump car, the combination with a door and a shaft for closing .said door. connected therewith, of a chain for operating said shaft and a second shaft for operating said chain adapted to move into position to hold said door when in closed position.

8. In a dump car, the combination with a drop door and a shaft for raising said door and suitably connected therewith, of a chain for'operating said shaft and a bodily movable shaft for operating said chain and adapted to be moved beneath the outer edges of said door to relieve the first mentioned shaft fromload.

- 9. In a dump car, the combination with a drop door, of a shaft stationarily journaled beneath said door, anjarm mounted on saidv shaft andfextending tangentially of the door, a quadrant,v 'rigidly mounted on said shaft, a chain for operatin said quadrant 'and a bodily movablesha for operating said chain and adapted to be moved to a `position beneath the free edge of said door to relieve said first mentioned shaft and its connections from load. l

10. In a dump car, the vcombination with a drop door mounted inthe ear underframe, of a shaft stationarily journaled in the car nnderframe beneath said door, arms for raising said door rigidly mounted on said shaft, a quadrant for operating 'said shaft, a

chain for operating said quadrant, a bodily i movable shaftjjournaled in the' uiitlerframe, said underframe having recesses in one portion 'thereof to receive and retain said bodily movable shaft against movement, said shaft being adapted to operate said chain and adapted to rest in said recesses While apted to rotate with saidshaft and after limited preliminary rotation .discharge doors,

operating said chain to raise the door, means operable upon rotation of said bodily movable shaft for ren'ioving the latter from said recesses when the door is closed and suitable connection between said bodily movable shaft 'and the under side of the door 70 'when closed to relieve the stationarily mounted shaft and connections from load- Weight when the door is closed.

11. In' a dump car, a discharge door, an arm for closing said door, a quadrant for operating said arm, a rotatable bodily movable shaft for first closing said door, then moving into position to hold said door in closed position, a recess for. holding said shaft in door closing position, means operable upon rotation of said shaftto force the latter out of said recess and suitable connection between said shaft and arln. j

12. In a dump car, a plurality of discharge doors, shafts for raising said doors, 85 'a pair of shaft operating devices mounted on said shafts and one of said devices forming a bearing for the other and means for operating said shaft operating devices.

13. In a dump car, a plura'ty of discharge doors, a plurality of shafts for operating said doors and having adjacent ends, l a shaft operating device on each of the adjacent ends of said shafts, one of said devices and its shaft forming a bearing for the other of said devices and its shaft and means for operating said devicesindependently of each other.

14. In a dump car, a discharge door, al shaft forl closing said door and extendin" beyond the side edgeitliereof, a quadrant f operating said shaft mounted on said sh vft at .its end, a bodily movable shaft for p' porting said door in closed position an also extending beyond the side edge of said door, a pglley onl said shaft at its end and cable connecting said pulley and quadrant..

15. In a dump car, a plurality of adjacent a pair of alined shafts for said doors, each .extending beyond closin 1 1 0 vthe si e edge of its door toward the other,

a shaft operating device mounted on the end of each shaft', one ofl said devices forniing a bearing for the other, a pair of shafts l for supporting said doors in closed positions, each extending beyond the side -.edge of its door toward the other, and a. connection between each door supporting shaft and its door closing shaft for operating, onel by the other. A

16. In a dump car. a vplurality of disharge doors, a pair of shafts for operatingV said doors and means on the end of one shaft yfencing a bearing for the end' of the other shaft, c 17: In a dump car, the'combin'ation with a discharge door, ofa shaft for operating said door, a quadrant for operating said shaft and anorm on said shaft. shaped to provide a tangential ongsgomon 'with said door.

18. Car door mechanism comprising in Combination with a door, a lifting Shaft, means operated thereby for Closing the door, said shaft being movable by said dooi? dos ing means into Supporting position when the door is miseri andv means independent of i 1 l i in position.

`Wiinossos )in testimony wherein-if 1n presence of nwo wilfw CHARLES L FRANK E. MILLER,

HARRY 

